Surface Stack Design

LEVEV...

oNAVAL

,, '~1RN SHIP G CENTER

-7,

TECHNICAL PRACTICES MANUAL FOR SURFACE SHIP STACK DESIGN NAVSEC REPORT 6136-76-18 i -'

JULY 1976

DDC

JUt 27 1979

--r

-c:

... 'HULL FORM AND FLUID DYNAMICS BRANCH (SEC 6136)

C.

NAVAL SHIP ENGINEERING CENTER HYATTSVILLE, MARYLAND 20782

p

Approed for publico releas5,

Diitribution unlimted.

n

/___

1J

TECHNICAL PRACTICES MANUAL FOR SURFACE SIP STACK DESIGN,

AVSECj

\ /-Jul

R%~m,r 6136- 7-1 i

76~

/

Prepared for D. McCallum Hull Form and Fluid Dynamics Branch (SEC 6136) Naval Ship Engineering Center Hyattsville, Maryland 20782 Prepared by Hydronautics, Incorporated Laurel, Maryland Hydronautics Report No. 7401.73-1 Designers & Planners, Inc. Hyattsville, Maryland 1i D&P Task No. 44

Under---

pUnder .... !- 1' .

ContiaeJg Ta

.

..

p'-2-4 -73-P=53au --

Contract N00024-76-C-4451 Task 6120-560

,1:71S

GR~AI

nouiced

•. . titon______

--------

es ,

I,

i

...iJl ad/or

!~ !eclal

_/

i

ABSTRACT

SThis manual contains a Procedure for the design of stacks on U.S. Naval ships based upon the experience already gained by the Navy as well as commercial ship stack design practices. The techniques described in detail include design guidance for the height and shape of exhaust gas stacks, prediction of plume trajectories, estimation of downwind plume gas temperatures, and model testing techniques. The manual is divided into two parts. The first part contains a step-by-step procedure, with examples, for auxiliary vessels with conventional stacks and combatant vessels with low profile stacks. Design tools are included in the form of tables, graphs, computer programs, etc. The second part of the manual contains the basic rationale, historical and experimental foundation for the design practices as well as a section describing model testing techniques. In addition, problems unique to Naval ships, such as air operations and temperature limitations...